%0 Journal Article
%T Removal of Carbon Monoxide from Hydrogen-rich  Fuels over CeO<sub>2</sub>-promoted Pt/Al<sub>2</sub>O<sub>3</sub>
%A Akkarat Wongkaew
%A Pichet Limsuwan
%J Advances in Chemical Engineering and Science
%P 7-14
%@ 2160-0406
%D 2013
%I Scientific Research Publishing
%R 10.4236/aces.2013.34B002
%X <p>
	<span>A comparative study of catalytic CO oxidation and selective CO oxidation over Pt/Al<sub>2</sub>O<sub>3</sub> and CeO<sub>2</sub>-promoted Pt/Al<sub>2</sub>O<sub>3</sub> catalysts has been investigated for the removal of a trace amount of CO from the reformed gas. The catalysts were pre</span><span>pared by sol gel and incipient wetness impregnation. CO oxidation and selective CO oxidation were carried out with a 5%Pt/Al<sub>2</sub>O<sub>3</sub> and a 5%Pt/15%CeO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>. The presence of 15%CeO<sub>2</sub> inthe 5%Pt/Al<sub>2</sub>O<sub>3</sub> dramatically improves the ac</span><span>tivities to CO oxidation and selective CO oxidation at low temperature (&lt;18<span style=\"font-family:宋体;\">0</span><span style=\"font-family:宋体;\"><span>℃</span></span>). FTIR results indicate that CO could react with lattice oxygen from ceria and release CO<sub>2</sub> as a product. Low space velocity would obtain high CO conversion at low temperatures while high space velocity would obtain high CO conversion at high temperatures. The results also show that a 5%Pt/15%CeO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> can completely oxidize 1% CO at18<span style=\"font-family:宋体;\">0</span><span style=\"font-family:宋体;\"><span>℃</span></span>with selectivity of 52% and space velocity of70,000 cm</span><sup><span style=\"font-family:宋体;\">3</span></sup><span>·</span><span>g<sup>-1</sup></span><span>·</span><span>h<sup>-1</sup>. Under the realistic gas feed with 1%O<sub>2</sub>, this catalyst is very stable and retains its activity and selectivity at18<span style=\"font-family:宋体;\">0</span><span style=\"font-family:宋体;\">℃</span>during 72 h.</span><span>&nbsp;&nbsp;</span> 
</p>
%K CO Oxidation
%K CeO&lt
%K sub&gt
%K 2&lt
%K /sub&gt
%K -Pt/alumina
%K CO Adsorption
%K Selective CO Oxidation
%K Fuel Processing
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=38587